Cấu Hình Cisco Layer 3
Switch 3750:
Building configuration…
Current configuration : 1956 bytes
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version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
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hostname Switch3
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boot-start-marker
boot-end-marker
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no aaa new-model
switch 1 provision ws-c3750g-24ts
system mtu routing 1998
ip subnet-zero
Cấu hình Routing
ip routing
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spanning-tree mode pvst
spanning-tree extend system-id
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vlan internal allocation policy ascending
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interface GigabitEthernet1/0/1
switchport access vlan 2
!
interface GigabitEthernet1/0/2
switchport access vlan 3
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interface GigabitEthernet1/0/3
switchport access vlan 4
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interface GigabitEthernet1/0/4
description "Noi voi Router 1841"
no switchport
ip address 192.168.0.254 255.255.255.0
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interface GigabitEthernet1/0/5
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interface GigabitEthernet1/0/6
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interface GigabitEthernet1/0/7
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interface GigabitEthernet1/0/8
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interface GigabitEthernet1/0/9
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interface GigabitEthernet1/0/10
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interface GigabitEthernet1/0/11
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interface GigabitEthernet1/0/12
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interface GigabitEthernet1/0/13
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interface GigabitEthernet1/0/14
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interface GigabitEthernet1/0/15
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interface GigabitEthernet1/0/16
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interface GigabitEthernet1/0/17
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interface GigabitEthernet1/0/18
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interface GigabitEthernet1/0/19
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interface GigabitEthernet1/0/20
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interface GigabitEthernet1/0/21
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interface GigabitEthernet1/0/22
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interface GigabitEthernet1/0/23
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interface GigabitEthernet1/0/24
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interface GigabitEthernet1/0/25
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interface GigabitEthernet1/0/26
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interface GigabitEthernet1/0/27
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interface GigabitEthernet1/0/28
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interface Vlan1
no ip address
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Cấu hình interface VLAN
interface Vlan2
ip address 192.168.2.1 255.255.255.0
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interface Vlan3
ip address 192.168.3.1 255.255.255.0
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interface Vlan4
ip address 192.168.4.1 255.255.255.0
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ip classless
Cấu hình default root
ip route 0.0.0.0 0.0.0.0 192.168.0.1
ip http server
ip http secure-server
!
!
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control-plane
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!
line con 0
logging synchronous
line vty 0
password telnet
login
line vty 1 4
login
line vty 5 15
login
!
end
Cấu hình VLAN trên 3750:
Switch3(config)#vlan 2
Switch3(config-vlan)#name KeToan
Switch3(config-vlan)#exit
Switch3(config)#vlan 3
Switch3(config-vlan)#name NhanSu
Switch3(config-vlan)#exit
Switch3(config)#vlan 4
Switch3(config-vlan)#name KinhDoanh
Switch3(config-vlan)#exit
Switch3(config)#
Gán vlan cho từng interface:
Switch3(config)#int f0/1
Switch3(config-if)#switchport access vlan 2
Switch3(config)#interface f0/2
Switch3(config-if)#switchport access vlan 3
Switch3(config)#int f0/3
Switch3(config-if)#switchport access vlan 4
Switch3(config-if)#exit
Switch3(config)#
Cấu hình cho Router C1841:
Building configuration…
Current configuration : 959 bytes
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
boot-start-marker
boot-end-marker
no aaa new-model
resource policy
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
no ip dhcp use vrf connected
interface FastEthernet0/0
ip address 192.168.1.253 255.255.255.0
ip nat outside
duplex auto
speed auto
interface FastEthernet0/1
ip address 192.168.0.1 255.255.255.0
ip nat inside
duplex auto
speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.1.1
Cấu hình đường ngược lại cho các vlan
ip route 192.168.2.0 255.255.255.0 FastEthernet0/1
ip route 192.168.3.0 255.255.255.0 FastEthernet0/1
ip route 192.168.4.0 255.255.255.0 FastEthernet0/1
no ip http server
ip nat inside source list 1 interface FastEthernet0/0 overload
access-list 1 permit any
control-plane
line con 0
line aux 0
line vty 0 4
login
!
end
Kiểm tra cấu hình vlan:
Show cấu hình ip routing, ở đây do chưa nối với Switch 0, 2 nên chưa có 2 mạng kia:
